| CATHAY TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRADING (HK) LIMITED | Private company limited by shares | Live |
| CATHAY RESOURCES (H.K.) INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| CATHAY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CATHAY HOLDINGS LIMITED | Private company limited by shares | Live |
| Cathay Digital Holdings Limited | Private company limited by shares | Live |
| CATHAY DRAGON HOLDINGS LIMITED | Private company limited by shares | Live |
| Cathay Fortune Holdings Limited | Private company limited by shares | Live |
| Cathay Grace Healthcare Holdings Limited | Private company limited by shares | Live |
| Grand Cathay Group Holdings Limited | Private company limited by shares | Live |
| CATHAY (HONG KONG) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CATHAY PACIFIC HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CATHAY PROPERTY HOLDINGS LIMITED | Private company limited by shares | Live |
| UNIVERSAL CATHAY (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| CATHAY HOLIDAYS LIMITED | Private company limited by shares | Live |
| Cathay Home Collection Limited | Private company limited by shares | Live |
| CATHAY HOME TEXTILE CO., LIMITED | Private company limited by shares | Dissolved |
| CATHAY BOOKSHOP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| GRAND CATHAY CAPITAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG CATHAY HOLDING CO., LIMITED | Private company limited by shares | Dissolved |
| CATHAY EXPORT COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CATHAY FINANCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Cathay Health (Hong Kong) Limited | Private company limited by shares | Live |
| CATHAY INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CATHAY (HONG KONG) LIMITED | Private company limited by shares | Live |
| AIR HONG KONG (CATHAY PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| Cathay Pacific Hong Kong Limited | Private company limited by shares | Live |
| CATHAY FOREST PRODUCTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Cathay Technology (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG (CHINA) CATHAY TRADE CO. LIMITED | Private company limited by shares | Live |
| CATHAY WEALTH (HONG KONG) LIMITED | Private company limited by shares | Live |
| CATHAY RESOURCES (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG CATHAY INTERNATIONAL CONSULTING LIMITED | Private company limited by shares | Dissolved |
| Hongkong Cathay Investment Development Limited | Private company limited by shares | Live |
| HONGKONG CATHAY GROUP CO., LIMITED | Private company limited by shares | Live |
| CATHAY HOLDING GROUP (HONGKONG) LIMITED | Private company limited by shares | Live |
| CATHAY MARINE SERVICE (HONGKONG) COMPANY LIMITED | Private company limited by shares | Live |
| HongKong Orient Cathay Limited | Private company limited by shares | Live |
| HongKong Orient Cathay Trading Limited | Private company limited by shares | Live |
| HONGKONG CATHAY WATCH HOLDINGS LIMITED | Private company limited by shares | Live |
| Cathay Horizon Limited | Private company limited by shares | Live |
| NEW CATHAY HOTEL LIMITED | Private company limited by shares | Dissolved |
| CATHAY HOTELS, LIMITED | Company limited by guarantee | Dissolved |
| CATHAY HOUSE H.K. COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hualyn Cathay (HongKong) Co., Limited | Private company limited by shares | Live |
| CATHAY ENTERPRISE INC. LIMITED | Private company limited by shares | Dissolved |
| INDO CATHAY SHIPPING (PRIVATE) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| CATHAY RESOURCES INDUSTRIAL LIMITED | Private company limited by shares | Live |
| CATHAY INDUSTRIES LIMITED | Private company limited by shares | Live |
| CENTRAL CATHAY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| EVER CATHAY INDUSTRIES LIMITED | Private company limited by shares | Live |
| CATHAY FURNITURE INDUSTRIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| CATHAY LAND INDUSTRIES (CHINA) CO., LIMITED | Private company limited by shares | Live |
| CATHAY SUCCESS INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI CATHAY CYCLE INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Cathay Technology Industry Limited | Private company limited by shares | Live |
| Cathay Information Investment Limited | Private company limited by shares | Live |
| CATHAY INNS LIMITED | Private company limited by shares | Dissolved |
| CATHAY INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTEGRATED CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| Cathay Intelligent Investment Limited | Private company limited by shares | Live |
| CATHAY INTERNATIONAL HK LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ST. CATHAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CATHAY ARCHITECTURE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY ARTS INTERNATIONAL INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CENTRAL CATHAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CATHAY CLASSICS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CATHAY CLOTHING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CATHAY TIRE INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| XINXING CATHAY INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| D.J. CATHAY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL ENGINEERING SERVICES LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL TRADE FAIRS LIMITED | Private company limited by shares | Dissolved |
| CATHAY FORTUNE INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| GRAND CATHAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL CAPITAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL SECURITIES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NEW CATHAY INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL SERVICES (HONG KONG) LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL HORSE RACING COMPANY LIMITED | Private company limited by shares | Dissolved |
| International Cathay Investment Limited | Private company limited by shares | Live |
| CATHAY INTERNATIONAL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| CATHAY MANUFACTURING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY MERCHANDISING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY METAL INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL MOTORS LIMITED | Private company limited by shares | Live |
| CATHAY NEBULA INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CATHAY INTERNATIONAL NOMINEES LIMITED | Private company limited by shares | Dissolved |
| CATHAY PETROLEUM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CATHAY PRODUCTS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Cathay International Resources Limited | Private company limited by shares | Live |
| CATHAY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| CATHAY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| CATHAY TRADING INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Dissolved |